The purpose of the present study was to explore relations between principals' self-efficacy, perceived job autonomy, job satisfaction, and perceived contextual constraints to autonomy. Principal self-efficacy was measured by a multidimensional scale called the Norwegian Principal Self-Efficacy Scale. Job autonomy, job satisfaction, and contextual constraints to autonomy were measured by three scales developed for the purpose of this study. Perceived contextual constraints to autonomy were comprised of financial and administrative constraints, employee participation, municipal authority, and national evaluation programs. Participants in the study were 1,818 principals from the population of Norwegian principals. Data were collected by means of an electronic questionnaire. A theoretical model was tested by means of SEM analysis for latent variables using the AMOS 18 program. The model had acceptable fit to data. The results revealed a positive relation between principal self-efficacy and perceived job autonomy. Principal self-efficacy and perceived job autonomy were positively related to job satisfaction and negatively related to contextual constraints. Contextual constraints to autonomy were negatively related to job satisfaction. The present study highlights important relations between principals' self-efficacy, perceived job autonomy, job satisfaction, and contextual constraints to autonomy. The results of the study are discussed together with limitations and suggestions for further research.